| Acronym | Meaning |
| HKF | Helgeson-Kirkham-Flowers (equation Of State) |
| TEO | Topological Equivalent Orbital |
| OTA | Office Of Technology Assessment |
| SESAO | Semiempirical Scaled Atomic Orbital |
| BPJ | Best Professional Judgement |
| LASER | Light Amplification By Stimulated Emission Of Radiation |
| RICE | UK Regular Interlaboratory Counting Exchange (for Asbestos Analysis) |
| PPA | Pollution Prevention Act (of 1990) |
| MVA | Muellverbrennungsanlage (German) Waste Incineration Plant |
| RBS | Rutherford Backscattering Spectrometry |